Which of the following is a common testing accommodation for students with learning disabilities?

Allowing breaks during tests is a widely recognized and beneficial accommodation for students with learning disabilities. This strategy helps to reduce anxiety and mental fatigue, which can significantly impact a student’s performance. Students with learning disabilities may require more time to process information or might become overwhelmed if they have to focus intensively for extended periods. By incorporating breaks, it allows them the opportunity to recharge, maintain focus, and perform optimally during their testing.

The other options, such as providing additional questions or using a single testing location, do not directly address the specific needs that may arise from a learning disability. Similarly, limiting time to complete the test could significantly hinder a student's performance rather than support their learning needs. Hence, allowing breaks stands out as the most appropriate and effective testing accommodation in this context.